Our older DC has been displaying some aggressive behaviour towards our baby DC, usual toddler behaviour towards new(ish) baby sibling. We have actually seen massive improvements at home and DC1 has been occasionally hitting other children at nursery but they don't see this as a major issue.
However it seems that at the CM where they both go one day a week she is struggling with DC1's behaviour towards DC2 (and another issue around mealtimes).
CM left me a note in DC1's diary, it's hard to discuss with both DCs there at drop off/pick up and with DC2 crying for me (very briefly at drop off and then if not cuddled immediately at pick up, in fact at pick up it's more DC1 wanting me to hear about their day, asking for a snack etc.)
I'm going to tell the CM about our strategies but they may not always be practical for her. With aggressive behaviour, we tend to cuddle DC2 and give attention there, and not do much to DC1 except possibly say quickly "no hitting remember". Occasionally we remove DC1 from the situation if it's more of a tantrum, and sit together 1-1 to calm down. DH reminds me that sometimes he also physically intervenes if the situation looks like it's escalating (mainly by removing DC2).
The mealtime behaviour is tipping over plates and to be honest we rarely get this any more, it was a behaviour from about a year ago if not more. If DC1 is getting worked up at mealtimes we usually place the plate out of reach as a preventative measure though we do occasionally remove DC1 from the table to calm down, again probably 1-1, if it's getting really bad. At home, DC1 seems to have worked out that tipping over plates = no more food, and is normally a very good eater and doesn't want meal times to end.
The problem is of course that 1-1 isn't that practical for the CM who has our 2 DCs and sometimes another child.
So I'm planning to give the CM a call but wondering if there's anything to remember/do/say or not say? Should I tell her about our strategies even where she can't really use them? Any other suggestions (I may come back and say we've tried it... we have tried a lot and not everything worked).